diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2022-10-24 15:33:35 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2022-10-26 09:53:15 +0300 |
| commit | b16c9e6c7d91c91e97a30f69b408388726e0376d (patch) | |
| tree | 60abdbffb78ca053d87f9af32e00df382314a1a8 /drivers/gpu/drm/drm_edid.c | |
| parent | 019b93874834e7810499b65f4bfc990d16363581 (diff) | |
drm/edid: split drm_edid block count helper
Split the drm_edid block count helper to a base version that reports the
block count indicated by EDID contents, and another on top that limits
the block count based on size allocated for the EDID.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a7d63878c7fb3dd6f3b987f5257897113797b94f.1666614699.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 8baa46dc2537..616c1cdc7507 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1613,7 +1613,8 @@ static const void *edid_extension_block_data(const struct edid *edid, int index) return edid_block_data(edid, index + 1); } -static int drm_edid_block_count(const struct drm_edid *drm_edid) +/* EDID block count indicated in EDID, may exceed allocated size */ +static int __drm_edid_block_count(const struct drm_edid *drm_edid) { int num_blocks; @@ -1633,12 +1634,18 @@ static int drm_edid_block_count(const struct drm_edid *drm_edid) num_blocks = eeodb; } - /* Limit by allocated size */ - num_blocks = min(num_blocks, (int)drm_edid->size / EDID_LENGTH); - return num_blocks; } +/* EDID block count, limited by allocated size */ +static int drm_edid_block_count(const struct drm_edid *drm_edid) +{ + /* Limit by allocated size */ + return min(__drm_edid_block_count(drm_edid), + (int)drm_edid->size / EDID_LENGTH); +} + +/* EDID extension block count, limited by allocated size */ static int drm_edid_extension_block_count(const struct drm_edid *drm_edid) { return drm_edid_block_count(drm_edid) - 1; |